That is what will happen. Send an excerpt and to view the full post click on the link, which will be tracked along with the website which serves content filled with javascript trackers and cookies :(
Over the past few years we’ve seen that change, to where entire businesses have been built around putting the content directly into the email (The Skimm, Substack, Axios, etc). It will be interesting to see if it switches back, if clicks are the only thing senders can measure.